Everyone seems to like them from what I have seen here on moparts. Their claim that it makes 40 hp more than a MSD 7AL box is what makes me never want to buy anything from them.
MSD may not be the end-all/be-all of the ignition world, but to make a claim like that is pretty ridiculous. Unless the MSD 7 box they used had some serious issues.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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